Abstract: A simple holddown structure for securely mounting a storage battery or the like is in the form of an integrally molded bracket member of corrosion-resistant material having two spaced-apart parallel angled members adapted to engage opposite upper edges of the battery and interconnected by a cross-bar member, the opposite ends of which are formed with an eyelet and an upstanding tab formation both extending beyond the angled members. The eyelet accommodates a fastener securing one side of the bracket member to a mounting structure and the tab cooperates with a separate L-shaped member having a series of apertures in one arm for selectively receiving the tab therein. The other arm of the L-shaped member has a slot accommodating a fastener for adjustably securing the other side of the bracket member to the mounting structure.